Hoisting apparatus



H. S. GARDNER. HOISTNG APPARATUS.

APPLICATION FILED DEC.22, 1920.

A TTOHNEYS an example of Patented Sept. 5, 1922.

FFEQE...

I-IOIS'IING APPARATUS.

'Original application filed March 23, 1918,

18, 1921. Divided and this application filed Dccember 22, 1920.

To all 207mm it mag concern: 7

Be it known that I, HOWARD S. GARDNER, a citizen of the United States,and resident of East Orange, county of Essex, State of New Jersey, haveinvented certain new and useful Improvements in Hoisting Apparatus, ofwhich the following is a specification.

My invention relates to apparatus for hoisting and discharging materialand which include a bucket having an exit openingv normally closed bymeans of a gate, door or the like and has for its object to provide animproved and simplified construction in which the material isefficiently confined or carried during hoisting and in which it isefliciently discharged when desired. The specific ob ject of myinvention is to provide a novel locking means whereby the gate, door orthe like is efficiently locked in its closed position and which iseasily released to permit the door to assume an open position. Myinvention will be fully described hereinafter and the features ofnovelty will be pointed out in the appended claims. The presentapplication is a division of another application filed by me on March23,1918, Serial N 0. 224,177.

In the accompanying drawings which illustrate an example of my inventionwithout defining its limits, Figure 1 is .a side elevation partly insection of a bucket including my invention and illustrating parts of theguideway and Fig. 2 is an inverted plan view of the bucket.

y improved construction is particularly adapted for handling concreteand otherv coalescent material in building operations and constructionwork, and I have accords ingly chosen an installation of this type as myinvention for the pur poses of illustration and description.

.As shown in the drawings, the apparatus comprises a pair of parallelguidewayso which are arranged in the building or other structure in anysuitable manner; these guideways may be of any Well known type adaptedeither to be built up in sections to keep pace with the constructionwork or to be installed in a structure after the latter has reached itsintended height. The guideways 5 serve as guides for a bucket orreceptacle 6 which is provided with rail-shoes 7 or their equivalents,arranged to co-operate with said guideways to maintain said bucketSerial No. 224,177, new Patent 'thelike 24 with No. 1,365,979, datedJanuary .Serial .1\To.432,446.

iazaiea I in its intended verticalorlother path. The '7 bucket 6 may beraised and lowered orio'therwise manipulated in any suitable manner, asby means of a cable. or the like, having its one end connected, forinstance, at 8 witha rame 91n which the bucket 6 is, mounted and passingover a suitablepulley'to the drum of an engine orv motor which providesthe power whereby saidbucket is operated.

he bucket 6 itself may be of any suitable dimensions and form andgenerally is prowardly from the rear portion toward an exit opening 11formed in the front Wall or' por tion of said bucket as shown in exitopeningis normally closed a gate, door orthe' like 12, carried by anddepending, 'forinstance, from journalledv in suitable bearings 14 theproper locatedat points upon the bucket 6. 1n the preferred form thegate or door 12 is preferably providedwith side wings '15 which, intheclosed position, extend exteriorly alongthe sidewalls of the bucket 6and in the open position of the gate bridge the spaces between it andthe bucketand prevent spreading of the:material during discharge. l

As shown in the illustrated example, the gate 12 is maintained in itsclosed position by means of a pair of bolts 16 having hooks 17 at theirfree ends and slidably mounted in bearings 18 secured to. the bottom 10.The bolts 16 arespaced from each other' in the direction of the width ofthe bucket 6,- and arepivotally connected atl9 with cranks 20 mountedupon a shaft 21, which in turn is journall'ed in bearings 22 alsofastened to the bottom 10. shaft 21. at. an intermediatepoint and isoperativelyconnected by means of a link or an arm 25 adjustably clampedupon a shaft 26, the latter passing through a hollow shaft 27 andextending at one end beyond the bucket 6 and being journalled inbearings 28 Ialso secured to the bottom 10. At its projecting end theshaft 26 carries an operating lever 29 which extends upwardly along andat a distance from a side wall of the bucket'and' is preferably providedat its free end with a grip or handle 30, said lever 29, intheillustrated example, being movable in the arc of a circle between themembers of a segment 31 secured upon said bucket as shown in Fig. 1.

Fig. 1. The by means of l A crank 23 is carried by the hinges '13 beforestated being adjustably In order that the lever 29 may be locked inposition in the predetermined adjustments, it may be provided with aspring latch 32 adapted to snap into notches 33 and 34 formed in one orboth members of the segment 31. l/Vhen it is desired to release thelever 29 the latch 32 may be moved to an inoperative position, againstthe tension of its spring by means of a finger piece 35 pivotallyconnected at 36 with the lever 29 and at 37 with the latch 32.

. With this arrangement, the hooks 17 of the bolts 16 project over thelower edge of the gate 12 when the latter is in its closed position andthus lock said gate or door in this position; the bolts 16 are heldagainst unintentional movement, owing to the fact that in the describedposition of the parts the lever29 inclines'forwardly and the latch 32'islocated in the notch 33 of the segment 31. The hooks 17 and bolts 16 mayat all times be adjusted to properly lock the gate 12 in its closedposition, by rotatably adjusting the arm 25 on the shaft 26, the arm asclamped thereon. When it is desired to release the gate the latch 32 isfirst removed from the notch 33 through the medium of the finger piece35 after which the lever 29 is swung to the rear until the latch snapsinto the notch 3 1. This causes the shaft 26 to be rocked and therebycauses the arm 25 to ex ert a pushing force upon the link or the like24a which in turn actuates the crank 23 and'rocks the shaft 21. As thelatter shaft is thus actuated it will operate the cranks 20, which inturn slidably move the bolts 16 in their bearings, in a direction tomove the hooks 17 away from the lower edge of the gate 12. The latter isthus released and under the force of the load or under the force ofgravity or both swings to an open position. To again lock the gate 12after it has been swung to its closed position by gravity or otherwisethe latch 32 is released from the notch 3e and the lever 29 is swung tothe front, until the latch 32 again snaps into the notch 33. Thisoperation of the lever 29 brings about a reverse actuation of the partsand again brings the hooks 17 of the bolts 16 into operative engagementwith the lower edge of the gate 12 which is thereby again firmly securedin its locked position.

My invention is extremely simple in construction and efficient inoperation and requires no skilled attention, either in operation or ininstallation. The apparatus may be used for handling any kind ofmaterial either loose or in bags or other containers. In my improvedapparatus the parts are all constructed and combined in such a :mannerthat the effects of all strains, stresses and shocks are neutralized,thus prolonging the life of the apparatus and rendering it proof againstrough and unusual usage.

My improved construction, as illustrated, includes also an improved skipor chute whereby the space between the discharge end of the bucket andthe receiving point or element for the material is bridged. Thearrangement includes additional novel features, all of which, withdetails of the skip and its operation, are set forth fully in the parentapplication hereinbefore referred to. It has therefore not beenconsidered necessary to describe these parts in detail in the presentcase.

Various changes in the specific forms shown and described may be madewithin the scope of the claims without departing from the spirit of myinvention.

- I claim:

1. In a hoisting apparatus, a buc'kethaving an exit opening, a pivoteddoor for said opening, a hooked bolt slidably mounted on said bucket andarranged to project over an edge of said door for locking the latter inits closed position and means for actuating said bolt to and from anoperative position.

2. In a hoisting apparatus, a bucket having an exit opening, a swingingdoor for said opening, a pair of hooked bolts slidably mounted on saidbucket for locking said door in its'closed position and means forconcurrently actuating said bolts to and from an operative position.

3. In ahoisting apparatus, a bucket having an exit opening, a pivotallysuspended door for saidopening, a shaft journalled on the bottom of saidbucket,'a pair of cranks carried by said shaft, a pair of iooked boltsslidably mounted on said bucket and connected with said cranks forlocking said door in its closed position, an intermediate crank on saidshaft, a second shaft journalled on the bottom of said bucket, an armcarried by said second shaft, a link connected with said arm and withsaid intermediate crank, and a lever carried by said second shaftwhereby said bolts are moved to and from an operative position,

4. In a hoisting apparatus, a bucket having an exit opening and adownwardly toward said exit opening, a pivotally suspended door forclosing said opening, a hooked bolt slidably mounted exteriorly upon thebottom of said bucket and arranged to project over the lower edge ofsaid door for locking the latter in its closed position, lever forslidably actuating said bolt to and from an operative position.

In testimony whereof I have hereunto set my hand.

HOWA \D S. GARDNER.

and mechanism including a bottom inclined

